Good question. I don't know if there is a list somewhere of just where the Search has looked. Other than looking at the Science Status page and seeing if by chance the current telescope RA and DEC position match Sirius, it would hard to know based on the data exposed to the public as far as I can tell. Sirius B is just now opening up enough separation to be visible again in large telescopes. I've caught it once in a big scope under excellent conditions many years ago.Seti@Home classic workunits:20,676 CPU time:74,226 hours

However, on a long shot Jeff suggested I reseat all the drives (most of which have been mounted in the system since we first got it roughly 8 years ago).

I think this is the equivalent of "Have you tried a bigger hammer?" However, it may solve the problem. The wiping action on the connection fingers can do wonders for those "bits" than haven't been moved for a long time.

Thanks to you guys for all your efforts to keep SETI up an running.[/i]

However, on a long shot Jeff suggested I reseat all the drives (most of which have been mounted in the system since we first got it roughly 8 years ago).

I think this is the equivalent of "Have you tried a bigger hammer?" However, it may solve the problem. The wiping action on the connection fingers can do wonders for those "bits" than haven't been moved for a long time.

Thanks to you guys for all your efforts to keep SETI up an running.[/i]

Actually it's the equivalent of the "pick it up a couple o' inches and drop it" or "Gravity re-seat" which we sometimes used on CRT terminals back when I was running big iron... (the shock would re-seat the cards in the terminal... and this worked suprisingly often, particularly on terminals in non-office environments...).

[…] I don't know if there is a list somewhere of just where the Search has looked.

Not in detail AFAIK, but since Arecibo can only ‘look’ within a radius of about 20° from its zenith, the declination range it can cover is limited, as shown in grey in the skymap at Where in the sky?

Other than looking at the Science Status page and seeing if by chance the current telescope RA and DEC position match Sirius, it would hard to know based on the data exposed to the public as far as I can tell.

Since Sirius (α CMa) is at Dec. –16°43', it’s some 15° too far south for Arecibo to ‘see’.